First CIEM for an amateur - good bass and mid range for funk, classic pop & rock please!

I've only had two pairs of real IEMs, the Shure se210 & 425, and I loved them both. They both offer clean, detailed sound and great vocals, however recently I began to desire some more excitement - a thicker sound (although not by too much) - and a punchier bass.

As an amateur music lover, I only play my music out of my old computer and iphone 4s, and my music files are usually not lossless. Oh the almighty Head-fi community, please help me - I'll be forever in your debt!